Q. 1 C4.4( 7 Votes )

Find the sum of each of the following APs:

– 37, – 33, – 29, ... to 12 terms.

Answer :

Here, first term = - 37

Common difference = (-33) - (-37) = 4


Sum of first n terms of an AP is


Sn = [2a + (n - 1)d]


S12 = [2(-37) + (12 - 1)(4)]


= (6)(-74 + 44)


= 6 × (-30)


= - 180


Thus, sum of 12 terms of this AP is - 180.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Champ Quiz | Arithmetic Progression34 mins
Champ Quiz | Arithmetic Progression30 mins
Lets Check Your Knowledge in A.P.49 mins
Arithmetic progression: Previous Year NTSE Questions34 mins
Quiz on Arithmetic Progression Quiz32 mins
Become a Master of A.P. in 45 Minutes!!47 mins
Arithmetic Progression Tricks and QUIZ37 mins
Quiz | Group of Questions on General Term of an A.P49 mins
Get to Know About Geometric Progression41 mins
NCERT | Solving Questions on Introduction of A.P42 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses